windows freezing inside mayby due to air recycle on in car turn to outside so get fresh air in ,sounds like exhaust giving noise on rear check rubber mounts ,squeeky engine is fanbelt needs replacing ticking noise is the heat sheild cooling down on front brakes as to high tickover could be a number of things from air leaks on inlet to either idle air control valve throttle linkage sticking or engine coolant temp switch
here to help, January 2011